Valve device



May 5, 1936. w. B. PARKER 2,640,915

VALVE DEVICE Filed April 6, 1935 f/Z' AapaJ/Ccr W W Patented May 5, 1936 UNITED STATES ATENT OFFICE Application April 6,

2 Claims.

My invention relates to a valve device.

An important object of the invention is to provide a valve device for use in connection with a carburetor of an internal combustion engine, to

supply an additional amount of air to the explosive charge before it is fed to the cylinders of the engine, and which is automatic in operation for increasing the supply of air in proportion to the increase in the speed of the engine.

A further object of the invention. is to provide a device of the above mentioned character having means to house the adjustable parts of the device, so that they cannot be tampered with and their adjustment changed without detection.

A further object of the invention is to provide a device of the above mentioned character which is adapted to serve as a governor, to limit the maximum speed of the engine.

A further object of the invention is to provide a device of the above mentioned character which is extremely simple in construction, cheap to manufacture and strong and durable.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawing forming a part of this application and in which like numerals are employed to designate like parts throughout the same,

Figure l is a side elevation of a device embodying my invention, showing the same applied to a carburetor,

Figure 2 is a plan view of the device removed,

Figure 3 is a transverse section taken on line 33 of Figure 2,

Figure 4 is a similar View taken on line 4-4 of Figure 2,

Figure 5 is a similar view taken on line 5-5 of Figure 2, and,

Figure 6 is a perspective view of the several elements included in the device, showing the same separated and in positions to be assembled.

In the drawing, wherein for the purpose of i1- lustration is shown a preferred embodiment of my invention, the numeral l0 designates an internal combustion engine, having an intake manifold I I and a crank case l2, as is customary. The numeral I3 designates a carburetor, of any well known or preferred type, having an outlet portion I4, and the usual throttle valve 15. The outlet portion I4 of the carburetor has a horizontal flange IE and the intake manifold l I has an opposed horizontal flange ll, spaced therefrom, as shown.

My device comprises a block l8, arranged between the flanges l 6 and IT, with suitable gaskets 1935, Serial No. 15,105

between the same, and clamped in position by bolts l9, which connect the flanges I6 and I1, and also pass through notches formed in the block or body portion 18, as shown. The block or body portion 58 is provided with a cylindrical passage 2!, through which the explosive charge from the carburetor travels. Mounted for movement Within the passage 2! is a draft actuated element 22, which is adapted to substantially completely close or cover the passage 2|, when in the seated position. This draft actuated element is provided with an attaching portion-23, inserted within a slot 24, formed in a rock shaft 25, and clamped to the rock shaft by screws 26 or the like. The draft actuated element seats downwardly or toward the carburetor and its free end portion is adapted to engage a shoulder 21. This prevents back-firing into the carburetor. The draft actuated element 22 is preferably curved in transverse section or upon a line parallel with the rock shaft 25. This rock shaft 25 is journalled within openings or bearings 28 and 29 and at its outer end the rock shaft has a swinging valve element 30 rigidly attached thereto, to be more fully described.

The block or body portion I8 is provided with an air or vapor supply port 3|, having an outer portion 32 which has its transverse area increased vertically. The inner portion 33 of this port has its transverse dimension increased horizontally, as shown. These portions 32 and 33 form the continuous port 3|. The numeral 33' designates an adjustable. valve to partly or wholly close or cover the inner port portion 33 and this valve is carried by a threaded plug'34' operating in a screw-threaded opening 35, formed in the block I8. The inner portion 33 extends through the wall of the passage 2! and islarranged to discharge the air or vapor at a point to travel above the draft actuated element 22, when it is seated. The outer port portion 372, having its greatest transverse dimension arranged vertically, may be arranged near the rock shaft 25, and this outer port portion 32 is covered and uncovered by the swinging valve element 30. By virtue of the vertical arrangement of the port portion 32 and its closeness to the rock shaft 25, the length of the valve element as may be reduced, thereby reducing the frictional engagement between the valve element and face 40, which will render the device more sensitive in operation. The outer or intake end of the port portion 32 is therefore transversely elongated, with the longitudinal axis of the elongation disposed at substantially a right angle to the plane or face of the block I 8. The block or body portion is provided with a horizontal arm 34, integral therewith, and this arm has a slotted plate mounted thereon and held in position by a screw 36, whereby the plate may be longitudinally adjusted and clamped in adjustment at the selected position. A retractile coil spring 31 is attached to a hook 38, formed upon one end of the plate 35, while the opposite end of the spring is attached to a screw 39, which is secured to the valve element 30. Particular attention is called to the fact that the outer surface of the valve element 30 is offset outwardly with respect to the outer surface of the arm 34 and this retains the spring 31 in the diagonal position, whereby this spring not only serves to swing the valve element 30 to the closed position, but to shift it inwardly and laterally so that its inner face properly slidably engages the face 40, adjacent to the outer portion 32 of the port.

The block 18 is provided with a vertical plate or fin 4| having a marginal flange 42, to engage with a cover or housing 43 to form a substantially air-tight joint. This cover or housing is adapted to be held seated or in a closed position by means of a bolt 44, engaging the body portion or block at 45. r The cover or housing has a lug 46 which is apertured, whereby a wire 4'! may be passed through the apertured lug 46 and the apertured head 44 and a seal 48 employed to connect the ends of this wire. By this means, the cover or housing. 43 cannot-be removed without detec 'hence to the port 3|.

.tion. The cover or housing 43 has a tubular inthe draft actuated element 22 and swing the same upwardly, in opposition to the spring 31. As the speed of the engine increases the degree of draft increases and the draft actuated element is swung toward the open position to an extent corresponding to the increase in the draft. The movement of the draft actuated element turns the rock shaft 25 and the valve element 3|] is swung. in a direction to uncover the vertically arranged outerportion 32 of the port, the extent of the uncovering being progressively increased upon the opening movement of the draft actuated element. When it is desired that the device serve as a speed regulator, a stiffer spring 31 is employed, whereby it will limit the opening movement of the draft actuated element 22, and this element will then control the maximum volume of the charge from the carburetor, whereby the speed of the engine will be limited accordingly. When the device is used as a speed regulator it also supplies additional air to the intake manifold, and the air is supplied in proportion to the extent of the opening movement of the draft actuated element. Since the plate 35 and associated ele ments are arranged within the housing 43, they cannot be tampered with to disturb the adjustment, without breaking the seal 48, whereby the same would be detected.

While I have shown my device as applied to an updraft carburetor, I also contemplate using the same in connection with a down draft carburetor. Further, I contemplate forming the device integral with the carburetor, in some instances.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of my invention or the scope of the subjoined claims.

Having thus described my invention, what I claim is:

1. A valve device comprising a body portion having a main draft passage extending through its opposite faces and also having an air supply port, the outer intake end of the air supply port being transversely elongated with the longitudinal axis of the elongation arranged at substantially a right angle to the plane of the face of the body portion, the inner end of the air supply port leading into the main draft passage, said body portion having a bearing opening formed therein and disposed exteriorly of and adjacent to the side of the transversely elongated intake end of the air supply port, a rock shaft mounted within the bearing opening and accordingly located adjacent to the transversely elongated intake end of the air supply port, a draft actuated element arranged within the main draft passage and mounted upon the rock shaft, a valve element mounted upon the rock shaft and adapted to swing across the transversely elongated intake end of the air supply port, and a spring to oppose the opening movement of the valve element.

2. A valve device comprising a body portion having a main draft passage and also having an air supply port extending through an outer wall of the body portion, a rock shaft mounted upon the body portion, a draft actuated element arranged within the main draft passage and mounted upon the rock shaft, a valve element mounted upon the rock shaft and arranged to slidably engage said end wall and move across the inlet end of the air supply port, and a diagonally arranged retractile coil spring connected with the valve element to oppose its opening movement and to also shift the same laterally into proper sliding engagement with said end Wall.

WILLIAM B. PARKER. 

